Secure Quantum-Classical Multi Party Computation

The field of secure multiparty computation (SMPC) was founded in the
80’s by the celebrated protocol of Yao that defined the pillar of
cryptography to date. However the overhead of some of these protocols
have made them impractical so far. On the other hand we have recently
witnessed the immense success and rapid expansion of the field of
delegated quantum computing.

We aim in this project to bridge between
the two fields to develop various hybrid quantum-classical secure
multiparty computation protocols where security and potentially
practicality of the original classical protocols are boosted. At the
same time we would be able to address the very question of secure
multiparty quantum computation, a novel route to be explored to go
beyond the quantum key distribution as the main activities in the
field of quantum cryptography.

Our proposed schemes will be based on
the protocol of blind quantum computing and the related verification
scheme. These protocols could be adapted to present a quantum analogue
of the Yao protocol while providing potentially a more secure scheme.

Furthermore the first proof-of-principle implementations for these
quantum protocols already exists that supports our global ambition of
making the hybrid scheme more practical as well.